BCM20730 Data Sheet
Pin Descriptions
a
Table 8: GPIO Pin Descriptions (Cont.)
Pin Number
32-Pin 40-pin 64-pin
Default
After
Power
Domain Alternate Function Description
QFN
QFN
BGA
Pin Name Direction POR
32
38
A4
P26
Input
Floating VDDO
• GPIO: P26
PWM0
• Keyboard scan output (column):
KSO18
• SPI_2: SPI_CS (slave only)
• SPI_1: MISO (master only)
• Optical control output: QOC0
• Triac control 1
Alternative Function:
• P12 in 32-QFN only
Current: 16 mA
1
1
B4
P27
Input
Floating VDDO
• GPIO: P27
PWM1
• Keyboard scan output (column):
KSO19
• SPI_2: MOSI (master and slave)
• Optical control output: QOC1
• Triac control 2
Alternative Function:
• P11 in 32-QFN only
Current: 16 mA
29
–
B5
P28
Input
Floating VDDO
• GPIO: P28
PWM2
• Optical control output: QOC2
• A/D converter input
• LED1
• IR_TX
Alternative Function:
• P13 in 32-QFN only
Current: 16 mA
–
–
–
–
A5
E4
P29
PWM3
Input
Input
Floating VDDO
Floating VDDO
• GPIO: P29
• Optical control output: QOC3
• A/D converter input
• LED2
• IR_RX
Current: 16 mA
P30
• GPIO: P30
• A/D converter input
• Pairing button pin in default FW
• Peripheral UART: puart_rts
BROADCOM
®
September 9, 2013 • 20730-DS108-R
Page 36
BROADCOM CONFIDENTIAL
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